com.luciad.earth.tileset.raster

LuciadLightspeedClass TLcdEarthAssetGXYViewTileSet

java.lang.Object

com.luciad.earth.tileset.ALcdEarthTileSet

com.luciad.earth.tileset.raster.TLcdEarthAssetGXYViewTileSet

All Implemented Interfaces:

ILcdEarthTileSet, ILcdBounded, ILcdDisposable, AutoCloseable

public class TLcdEarthAssetGXYViewTileSet
extends ALcdEarthTileSet

A tileset that generates image tiles for an asset model.

This tileset provides similar functionality as the TLcdEarthGXYViewTileSet but uses a model with ILcdEarthAssets instead of a ILcdGXYLayers to generate image tiles.

To produce or update a tile only the assets that have ILcdEarthTileSetCoverage.CoverageType.IMAGE as coverage type and overlap with the tile are used. The gxy layers of these assets are created lazily by using their model decoder to create a model and passing this model to the layer factory. The order of the overlapping assets is determined using their natural ordering.

Changes to the asset model are taken into account in subsequent produced or updated tiles.

This class is thread-safe.

Since:

9.1

See Also:

TLcdEarthGXYViewTileSet

Constructor Summary

Constructors

Constructor and Description
TLcdEarthAssetGXYViewTileSet(ILcdBounds aBounds, int aLevels, long aLevel0RowCount, long aLevel0ColCount, int aImageTileResolution, ILcdGeoReference aTileSetReference, ILcdModel aAssetModel, ILcdGXYLayerFactory aLayerFactory) Constructs a new TLcdEarthAssetGXYViewTileSet with the specified settings.
TLcdEarthAssetGXYViewTileSet(ILcdBounds aBounds, int aLevels, long aLevel0RowCount, long aLevel0ColCount, int aImageTileWidth, int aImageTileHeight, ILcdGeoReference aTileSetReference, ILcdModel aAssetModel, ILcdGXYLayerFactory aLayerFactory) Constructs a new TLcdEarthAssetGXYViewTileSet with the specified settings.

Method Summary

Modifier and Type	Method and Description
void	cancelTile(int aLevel, long aTileX, long aTileY, ILcdEarthTileSetCoverage aCoverage, ILcdGeoReference aGeoReference, TLcdEarthTileFormat aFormat, ILcdEarthTileSetCallback aCallback, Object aContext) Cancels any pending tile requests for the given parameters.
boolean	containsTile(ILcdEarthTileSetCoverage aCoverage, int aLevel, long aX, long aY, Object aContext) Returns true if the repository contains the specified tile.
boolean	containsTileSetCoverage(String aCoverageName) Returns true if the repository contains a coverage with the specified name.
void	dispose() This method releases all resources held by the repository, such as file locks, threads or server connections.
ILcdBounds	getBounds() Returns the bounds of this tile set, expressed in the model reference of the model that contains this tile set.
ILcdGXYLayerFactory	getGXYLayerFactory() Returns the GXY layer factory used for creating layers for the models.
TLcdEarthGXYViewTileSet	getGXYViewTileSet() Returns the TLcdEarthGXYViewTileSet that is used to generate the tiles.
ILcdEarthModelDecoderFactory	getModelDecoderFactory() Returns the model decoder factory used for decoding the assets.
ILcdEarthTileSetCoverage	getTileSetCoverage(int aIndex) Returns the coverage at the specified index.
ILcdEarthTileSetCoverage	getTileSetCoverage(String aCoverageName) Returns the tileset coverage with the specified name.
int	getTileSetCoverageCount() Returns the number of coverages this tileset contains.
boolean	isFormatSupported(ILcdEarthTileSetCoverage aCoverage, TLcdEarthTileFormat aFormat) Returns true only for the coverage's native format.
boolean	isGeoReferenceSupported(ILcdEarthTileSetCoverage aCoverage, ILcdGeoReference aGeoReference) Returns true only for the coverage's native georeference.
ALcdEarthTile	produceTile(ILcdEarthTileSetCoverage aCoverage, int aLevel, long aX, long aY, ILcdGeoReference aGeoReference, TLcdEarthTileFormat aFormat, Object aContext) Gets a tile from the repository.
void	produceTile(ILcdEarthTileSetCoverage aCoverage, int aLevel, long aTileX, long aTileY, ILcdGeoReference aGeoReference, TLcdEarthTileFormat aFormat, TLcdEarthTileOperationMode aMode, ILcdEarthTileSetCallback aCallback, Object aContext) Produces the requested tile, and invoke the supplied callback when done.
void	setModelDecoderFactory(ILcdEarthModelDecoderFactory aModelDecoderFactory) Sets the model decoder factory used for decoding the assets.
ALcdEarthTile	updateTile(ALcdEarthTile aEarthTile, Object aContext) Returns an updated version of the specified tile.
void	updateTile(ALcdEarthTile aTile, TLcdEarthTileOperationMode aMode, ILcdEarthTileSetCallback aCallback, Object aContext) Produces an updated version of the given tile, if necessary.

Methods inherited from class com.luciad.earth.tileset.ALcdEarthTileSet

getLevelCount, getTileBoundsSFCT, getTileColumnCount, getTileRowCount

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface com.luciad.util.ILcdDisposable

close

Constructor Detail

TLcdEarthAssetGXYViewTileSet

public TLcdEarthAssetGXYViewTileSet(ILcdBounds aBounds,
                                    int aLevels,
                                    long aLevel0RowCount,
                                    long aLevel0ColCount,
                                    int aImageTileWidth,
                                    int aImageTileHeight,
                                    ILcdGeoReference aTileSetReference,
                                    ILcdModel aAssetModel,
                                    ILcdGXYLayerFactory aLayerFactory)

Constructs a new TLcdEarthAssetGXYViewTileSet with the specified settings.

Parameters:

aBounds - the bounds of the tileset in the model reference

aLevels - the number of tile levels

aLevel0RowCount - the number of tile rows at level 0

aLevel0ColCount - the number of tile columns at level 0

aImageTileWidth - the X-resolution of a single tile

aImageTileHeight - the Y-resolution of a single tile

aTileSetReference - the reference in which the tileset's bounds and tile pyramid are defined

aAssetModel - the asset model

aLayerFactory - the layer factory that will be used to create layer's from the models

TLcdEarthAssetGXYViewTileSet

public TLcdEarthAssetGXYViewTileSet(ILcdBounds aBounds,
                                    int aLevels,
                                    long aLevel0RowCount,
                                    long aLevel0ColCount,
                                    int aImageTileResolution,
                                    ILcdGeoReference aTileSetReference,
                                    ILcdModel aAssetModel,
                                    ILcdGXYLayerFactory aLayerFactory)

Constructs a new TLcdEarthAssetGXYViewTileSet with the specified settings.

Parameters:

aBounds - the bounds of the tileset in the model reference

aLevels - the number of tile levels

aLevel0RowCount - the number of tile rows at level 0

aLevel0ColCount - the number of tile columns at level 0

aImageTileResolution - the resolution of a single tile, both for X- and Y-resolutions

aTileSetReference - the reference in which the tileset's bounds and tile pyramid are defined

aAssetModel - the asset model

aLayerFactory - the layer factory that will be used to create layer's from the models

Method Detail

setModelDecoderFactory

public void setModelDecoderFactory(ILcdEarthModelDecoderFactory aModelDecoderFactory)

Sets the model decoder factory used for decoding the assets.

When set, model decoders will be created through this factory, rather than retrieved from the assets themselves.

Parameters:

aModelDecoderFactory - the model decoder factory

getModelDecoderFactory

public ILcdEarthModelDecoderFactory getModelDecoderFactory()

Returns the model decoder factory used for decoding the assets.

Returns:

the model decoder factory

See Also:

setModelDecoderFactory(com.luciad.earth.model.ILcdEarthModelDecoderFactory)

getGXYLayerFactory

public ILcdGXYLayerFactory getGXYLayerFactory()

Returns the GXY layer factory used for creating layers for the models.

Returns:

the layer factory

getGXYViewTileSet

public TLcdEarthGXYViewTileSet getGXYViewTileSet()

Returns the TLcdEarthGXYViewTileSet that is used to generate the tiles.

Returns:

the TLcdEarthGXYViewTileSet that is used to generate the tiles.

dispose

public void dispose()

Description copied from interface: ILcdEarthTileSet

This method releases all resources held by the repository, such as file locks, threads or server connections.

Specified by:

dispose in interface ILcdEarthTileSet

Specified by:

dispose in interface ILcdDisposable

Overrides:

dispose in class ALcdEarthTileSet

produceTile

public void produceTile(ILcdEarthTileSetCoverage aCoverage,
                        int aLevel,
                        long aTileX,
                        long aTileY,
                        ILcdGeoReference aGeoReference,
                        TLcdEarthTileFormat aFormat,
                        TLcdEarthTileOperationMode aMode,
                        ILcdEarthTileSetCallback aCallback,
                        Object aContext)

Description copied from interface: ILcdEarthTileSet

Produces the requested tile, and invoke the supplied callback when done. The resulting tile is passed to the call back's tileAvailable() method. If the tile cannot be produced for some reason, the method tileNotAvailable() should be called instead.

If the tileset supports it and aMode is TLcdEarthTileOperationMode.PREFER_ASYNCHRONOUS, the tile request may be executed asynchronously. However, the callback must be invoked at some point in time, unless the cancelTile() method is used to cancel the tile request before it is executed. If aMode is TLcdEarthTileOperationMode.FORCE_SYNCHRONOUS, the request must be executed synchronously and the callback must be invoked before produceTile() returns.

Tiles may be requested in reference systems other than the native geo reference of the underlying data, provided that the isGeoReferenceSupported() method returns true for the requested reference. If this is not the case, the tileset should call tileNotAvailable(). If the tileset calls tileAvailable(), the geo reference of the resulting tile must be equal to aGeoReference, and the tile's bounds must likewise be expressed in this reference.

Similarly, tiles may be requested in different data formats, as described by TLcdEarthTileFormat. The format determines the type of the data object that will be contained in the requested tile. To check if a format is supported, use isFormatSupported(). If the specified format is not supported, the tileset should call tileNotAvailable().

The context parameter may be used to pass application-specific data into the tileset. If it is not needed, its value may be null.

Parameters:

aCoverage - the coverage from which the tile is requested

aLevel - the level from which the tile is requested

aTileX - the column index of the requested tile

aTileY - the row index of the requested tile

aGeoReference - the reference system in which the tile should be returned

aFormat - the desired format of the tile's data

aMode - controls the synchronous or asynchronous behaviour of the tileset

aCallback - will be invoked when the tile is available to be used

aContext - application-specific data to be used by the tileset, if any

produceTile

public ALcdEarthTile produceTile(ILcdEarthTileSetCoverage aCoverage,
                                 int aLevel,
                                 long aX,
                                 long aY,
                                 ILcdGeoReference aGeoReference,
                                 TLcdEarthTileFormat aFormat,
                                 Object aContext)
                          throws IOException

Description copied from interface: ILcdEarthTileSet

Gets a tile from the repository.

Specified by:

produceTile in interface ILcdEarthTileSet

Overrides:

produceTile in class ALcdEarthTileSet

Parameters:

aCoverage - the coverage from which to query a tile

aLevel - the detail level for which to query a tile

aX - the column index at which to query a tile

aY - the row index at which to query a tile

aGeoReference - the georeference of the requested tile

aFormat - the format of the requested tile

aContext - application-specific data to be used by the tileset, if any

Returns:

the requested tile, or null if the repository does not contain this tile

Throws:

IOException - if the tile cannot be produced

updateTile

public void updateTile(ALcdEarthTile aTile,
                       TLcdEarthTileOperationMode aMode,
                       ILcdEarthTileSetCallback aCallback,
                       Object aContext)

Description copied from interface: ILcdEarthTileSet

Produces an updated version of the given tile, if necessary. Produces the same tile if the given tile is up to date.

Specified by:

updateTile in interface ILcdEarthTileSet

Overrides:

updateTile in class ALcdEarthTileSet

Parameters:

aTile - tile to check

aMode - controls the synchronous or asynchronous behaviour of the tileset

aCallback - will be invoked when the tile is available to be used

aContext - application-specific data to be used by the tileset, if any

updateTile

public ALcdEarthTile updateTile(ALcdEarthTile aEarthTile,
                                Object aContext)
                         throws IOException

Description copied from interface: ILcdEarthTileSet

Returns an updated version of the specified tile.

Specified by:

updateTile in interface ILcdEarthTileSet

Overrides:

updateTile in class ALcdEarthTileSet

Parameters:

aEarthTile - the tile to check

aContext - application-specific data to be used by the tileset, if any

Returns:

the tile itself or a new, updated version

Throws:

IOException - if the tile cannot be updated

containsTile

public boolean containsTile(ILcdEarthTileSetCoverage aCoverage,
                            int aLevel,
                            long aX,
                            long aY,
                            Object aContext)

Description copied from interface: ILcdEarthTileSet

Returns true if the repository contains the specified tile.

Specified by:

containsTile in interface ILcdEarthTileSet

Overrides:

containsTile in class ALcdEarthTileSet

Parameters:

aCoverage - the coverage from which to query a tile

aLevel - the detail level for which to query a tile

aX - the column index at which to query a tile

aY - the row index at which to query a tile

aContext - application-specific data to be used by the tileset, if any

Returns:

true if the repository contains the requested tile

cancelTile

public void cancelTile(int aLevel,
                       long aTileX,
                       long aTileY,
                       ILcdEarthTileSetCoverage aCoverage,
                       ILcdGeoReference aGeoReference,
                       TLcdEarthTileFormat aFormat,
                       ILcdEarthTileSetCallback aCallback,
                       Object aContext)

Description copied from interface: ILcdEarthTileSet

Cancels any pending tile requests for the given parameters. This method is only meaningful in tilesets that support the asynchronous operation mode. If cancelTile() is called, the tileset is no longer required to invoke the ILcdEarthTileSetCallback for the tile in question. The tileset is not obligated to honor the cancelTile() request, but if cancelTile() is not called, then it is required to invoke the ILcdEarthTileSetCallback at some point.

Specified by:

cancelTile in interface ILcdEarthTileSet

Overrides:

cancelTile in class ALcdEarthTileSet

Parameters:

aLevel - the level from which the tile is requested

aTileX - the column index of the requested tile

aTileY - the row index of the requested tile

aCoverage - the coverage from which the tile is requested

aGeoReference - the reference system in which the tile is requested

aFormat - the format in which the tile is requested

aCallback - would be invoked when the tile would have been available to be used

aContext - application-specific data to be used by the tileset, if any

isGeoReferenceSupported

public boolean isGeoReferenceSupported(ILcdEarthTileSetCoverage aCoverage,
                                       ILcdGeoReference aGeoReference)

Description copied from class: ALcdEarthTileSet

Returns true only for the coverage's native georeference.

Specified by:

isGeoReferenceSupported in interface ILcdEarthTileSet

Overrides:

isGeoReferenceSupported in class ALcdEarthTileSet

Parameters:

aCoverage - the coverage to check for

aGeoReference - the reference to check for

Returns:

true if the given coverage can be queried with the given reference

isFormatSupported

public boolean isFormatSupported(ILcdEarthTileSetCoverage aCoverage,
                                 TLcdEarthTileFormat aFormat)

Description copied from class: ALcdEarthTileSet

Returns true only for the coverage's native format.

Specified by:

isFormatSupported in interface ILcdEarthTileSet

Overrides:

isFormatSupported in class ALcdEarthTileSet

Parameters:

aCoverage - the coverage to check for

aFormat - the format to check for

Returns:

true if the given coverage can be queried with the given format

getTileSetCoverage

public ILcdEarthTileSetCoverage getTileSetCoverage(String aCoverageName)

Description copied from interface: ILcdEarthTileSet

Returns the tileset coverage with the specified name.

Specified by:

getTileSetCoverage in interface ILcdEarthTileSet

Overrides:

getTileSetCoverage in class ALcdEarthTileSet

Parameters:

aCoverageName - the name of the coverage to look for

Returns:

the tileset coverage with the specified name

containsTileSetCoverage

public boolean containsTileSetCoverage(String aCoverageName)

Description copied from interface: ILcdEarthTileSet

Returns true if the repository contains a coverage with the specified name.

Specified by:

containsTileSetCoverage in interface ILcdEarthTileSet

Overrides:

containsTileSetCoverage in class ALcdEarthTileSet

Parameters:

aCoverageName - the name of the coverage to look for

Returns:

true if the repository contains a coverage with the specified name, false otherwise

getTileSetCoverage

public ILcdEarthTileSetCoverage getTileSetCoverage(int aIndex)

Description copied from interface: ILcdEarthTileSet

Returns the coverage at the specified index.

Parameters:

aIndex - the index of the coverage to return

Returns:

the requested ILcdEarthTileSetCoverage

getTileSetCoverageCount

public int getTileSetCoverageCount()

Description copied from interface: ILcdEarthTileSet

Returns the number of coverages this tileset contains.

Returns:

the number of coverages this tileset contains

getBounds

public ILcdBounds getBounds()

Description copied from interface: ILcdEarthTileSet

Returns the bounds of this tile set, expressed in the model reference of the model that contains this tile set.

Returns:

the bounds of this tile set

See Also:

ILcdBounded.getBounds()